6400542610612 has 24 divisors (see below), whose sum is σ = 11328554711880. Its totient is φ = 3163823815680.

The previous prime is 6400542610591. The next prime is 6400542610639. The reversal of 6400542610612 is 2160162450046.

It can be written as a sum of positive squares in 4 ways, for example, as 115473554596 + 6285069056016 = 339814^2 + 2507004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920178 + ... + 3694294.

It is an arithmetic number, because the mean of its divisors is an integer number (472023112995).

Almost surely, 2^{6400542610612} is an apocalyptic number.

It is an amenable number.

6400542610612 is a deficient number, since it is larger than the sum of its proper divisors (4928012101268).

6400542610612 is a wasteful number, since it uses less digits than its factorization.

6400542610612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780691 (or 2780689 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 6400542610612 in words is "six trillion, four hundred billion, five hundred forty-two million, six hundred ten thousand, six hundred twelve".